how to get rid of the carbon buildup in my BMW 5 Series G30/G31 (2017-2024) engine?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical issues.
• Allow the engine to cool before beginning work.

2. Remove Intake Manifold

• Tools Required: Socket set, torque wrench, screwdriver set.
• Remove any engine covers or components blocking access to the intake manifold.
• Disconnect any electrical connectors and vacuum hoses attached to the intake manifold.
• Unscrew the intake manifold bolts in the specified order and remove the manifold carefully.

3. Clean Carbon Buildup

• Tools Required: Carbon cleaning kit (including a spray cleaner or walnut blaster), soft brush, vacuum.
• Use a carbon cleaning solution or walnut shell blaster to remove deposits from the intake valves and ports.
• Apply the cleaning solution according to the manufacturer’s instructions, ensuring thorough coverage of carbon-affected areas.
• Use a soft brush to help dislodge stubborn carbon deposits, and vacuum any debris that falls into the engine.

4. Reassemble Components

• Reinstall the intake manifold, ensuring to torque the bolts to the manufacturer’s specifications.
• Reconnect any electrical connectors and vacuum hoses.
• Reinstall any engine covers removed during the process.

5. Final Checks

• Reconnect the negative battery terminal.
• Start the engine and let it idle for a few minutes to ensure proper operation.
• Monitor for any leaks or unusual noises.